Verifiable And Multi-keyword Searchable Attribute-based Encryption Scheme For Cloud Storage

Verifiable and Multi-keyword Searchable Attribute-based Encryption Scheme for Cloud Storage

Abstract:

In an attribute-based searchable encryption (ABSE) scheme, data owners can encrypt their data with access policy for security consideration, and encrypt keywords to obtain keyword index for privacy keyword search, and data users can search interesting keyword on keyword indexes by keyword search trapdoor. However many existing searchable encryption schemes only support single keyword search and most of them have computational costs at user client. In this project, we propose a verifiable and multi-keyword searchable attribute-based encryption (VMKS-ABE) scheme for cloud storage, in our new scheme multi-keyword can be searched and the search privacy is protected. It is proved that the secure keyword index is indistinguishable under the adaptive keyword attacks in the general group model, and the cipher text is selectively secure under selective plaintext attacks in the random oracle model. The security and experimental results show that our scheme is suitable for practicability.